Display spout for dispensing pumps



June 22 1926.

C. SPAETH DISPLAY SPOUT FOR DISPENSING PUMPS Filed August 6, 1924 31% AM W Patented June 22, 1926.

UNITED STATES v 1,589,997 PATENT OFFICE.

CHARLES SPAETH, OF CLEVELAND, OHIO, ASSIGNOR TO THE MARVEL EQUIPMENTCOM- PANY, F CLEVELAND, OHIO, A CORPORATIOQT OF OHIO.

DISPLAY SPOU'J. FOB DISPENSING PUMPS.

Application filed August 6, 1924. Serial No. 780,839.

My invention pertains to an improvement in display spouts for dispensingpumps, my general object being to provide a valveless delivery spout inwhich a part of the oil or other liquid being dispensed may be detainedfor display purposes without drip or leakage at theopen mouth of thespout during inoperative periods of the pump.

In the accompanying drawing Fig. 1 is a side elevation of a measuringand dispensing pump mounted upon the top of a tank or barrel containingthe liquid to be dispensed, and showing my improved display spoutattached to the pump. Fig. 2 is an enlarged sectional view of thedisplay spout itself, and Fig. 3 is a horizontal section of the sameparts on line 33 of Fig. 2.

In dispensing liquids, especially lubricating oils, in measuredquantities from tanks or barrels, it has been found desirable to givethe purchaser an opportunity to visibly examine and inspect the productbeing dispensed. To facilitate this inspection and permit the display ofthe actual oil contained within the tank or barrel as it is beingdispensed I have devised a spout head 2 which may be aseparate orintegral part of the discharge pipe 3 of a lift or force pump, forexample, a pump 4 having an intake pipe 5 adapted to be inserted withina tank or barrel 6. .The' pumping mechanism may be of any suitable kindor charactor, and as shown a hand crank 7 is adapted to operate the sameto discharge the oil through the spout head which in the presentinstance 'is surmounted by a glass column 8 for visible display of allthe oil passing through the spout. This glass column is constantlyfilled with oil notwithstanding that the spout has an open outlet ornozzle 9 at its bottom, and in operating the pump the oil dis layedwithin the glass column 1s dischargediand displaced by the oil pumpedfrom the tank so that a new body of oil is stored and displayed in thecolumn after each operation of the pump.

Spout head 2 is a hollow body divided internally by a wall 10 into anintake passage 11 and an outlet chamber 12, the latter having the nozzleor outlet 9 depending therefrom. This nozzle member is in the form of ashort tube of small diameter, the upper end portion 14 of which isprojected for a short distance into chamber 12. An annular enlargement15 at the top of spout head 2 the bottom of cap 21 places the upper endis recessed and contains a seat for a sealing washer 16 and the bottomend of the glass tube of display column 8, and a horizontal wall 17 atthe bottom of the recess is formed with a single hole 18 approximatelynine thirty-seconds of an inch in diameter which opens into intakepassage 11 to permit the oil to pass upwardly in a solid stream intoglass column 8. Two small capillary acting holes 1919, eachapproximately threesixteenths of an inch in diameter, are also formed inwall 17 in open communication with outlet chamber 12 to permit the oilto pass from column 8 to nozzle 9. A central tie member in the form of atube 20 of small diameter and of capillary action is screwed into wall17 in open communication with outlet chamber 12 and this tube extendsupwardly through a cap or cover 21 where an acorn nut 22 seals the upperend of the bore of the tube and serves to fasten cap 21 tight-1y uponthe glass tube. Suitable sealing washers 23 and 24 are used between thenut and cap, and between the cap and glass tube, respectively, and thecentral opening 25 in the cap is also flared to hold litharge or anyother suitable sealing substance around the tube. A lateral opening 26in the small metal tube 20 at or near of the space within glass tube 8in open communication with theupper end of the small central tube 20 andt'herethrou h in open communication with outlet cham er 12 and the upperend of nozzle 9. The purpose of this arrangement of parts is to permitthe glass display column to be completely filled with oil and to remainunchanged or stand -in that condition under atmospheric pressure withoutleaka e or drip of oil at the open nozzle 9 whi e the pump is notoperating.

Thus in a lift pump 4 such as shown the pump and its spout is filledwith a head of liquid at all times, and in operating the 100 pumpinitially the liquid is forced to the top of the lass column and in sodoing all or substantially all the air therein is forced out of thecolumn through openin 26 and tube 20, and the liquid may fill t is tubeeventually. When pumping ceases the flow of liquid at nozzle 9 alsoceases and the liquid within the glass display column will be heldtherein by atmospheric ressure.

The factors that contribute to produce the W1 desired result are therelative difference in areas of the holes or ducts 18 and 19, thediameter of nozzle 9, the projecting of end 14 of nozzle 9 into outletchamber 12, and the communicating connection between the top and bottomof the liquid column as exemplified herein by tube 20 which is alsoutilized in this instance as a tierod.

What I claim as my invention, is-

1. A liquid dispensing faucet including an outlet spout and a displaychamber. the latter being provided with an inlet port and capillaryoutlet ports to the outlet spout, one of said capillary ports comprisinga capillary tube communicating with the upper portion of the displaychamber and serving in the initial operation of the device to vent thedisplay chamber as the latter is filled, said tube thereafter beingfilled with fluid.

2. A liquid dispensing faucet including an outlet spout and a hollowdisplay member having intake and capillary outlet connections at itsbottom communicating with said outlet spout and a capillary air andliquid venting tube communicating with the outlet spout and the upperpart of said hollow disp ay member.

3. A liquid dispensing faucet including an outlet spout with a dischargenozzle, a display tube extending upwardly from said spout, separateintake and capillary outlet openings at the bottom of said display tubeand a capillary air and liquid venting tube extending with its u peropen end into the upper part of said display tube and with its loweropen end through the bottom of said display tube.

4:. The combination of a liquid dispensing pump with a liquid dispensingfaucet comprising an outlet spout and a display tube provided with aninlet opening communieating with said pump and capillary outlet openingsat its bottom to said outlet spout, one of said capillary openings beingprovided with av capillary tube communicating with the upper portion ofsaid display tube for air and liquid venting and sealing purposes, saidfaucet dispensing liquid only durmg positive action or said pump.

5. A liquid dispensing spout having an intake passage and a dischargenozzle, a glass resaeer tube mounted upon said spout having intake andcapillary outlet ducts open to said passage and nozzle, a cap for saidtube, and a tu ular-capillary tie member for said cap and tube connectedwith said spout having open communication with the upper interior end ofsaid tube and with said discharge nozzle.

6. A liquid dispensing spout having sepa rate intake and outletchambers. a discharge nozzle projecting into said outlet chamber, aglass tube mounted upon said spout in open communication with saidintake chamber. in capillary communication with said outlet chambers andclosed at its top, and a capillary tube within said glass tube open atits opposite ends to said outlet chamber and the upper end of said glasstube.

7. A spout head for dispensing pumps, having a separate intake passageand outlet chamber. a nozzle of small diameter opening into said outletchamber, a capillary tube extending upwardly from said spout and open atits lower end to said outlet chamber, a tubular display column open tosaid spout by capillary openings and enclosing said tube, a closuremember for said column, means adapted to fasten said closure member inplace, and said capillary tube having open communication at its upperend with the interior of said tubular column.

8. A spout head for dispensing pumps, having an intake passage and anoutlet chamber therein and a recessed seat at its top provided withrelatively large and small capillary ducts in communication with saidintake passage and outlet chamber respectively, a cylindrical glasscolumn mounted upon said seat. a central capillary tube within saidglass column connected with said spout head and open at its bottom tosaid outlet chamber, a cap sleeved over said capillary tube in sealingposition upon the top of said column, a fastening nut for said capengaged with said capillary tube, and said capillary tube having anopening therein in communication with the upper interior part of saidcolumn.

in testimony whereoi ll alfix my signature.

ciaaaitns SPAETH.

